﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MengLin.OOP.DesignPattern.Observer.TearcherPhoneChange.Interface
{
    /// <summary>
    /// 抽象的观察者
    /// </summary>
    public interface IObserver
    {
        void Update(Object obj);
    }
}
